Dod_ - Digital Output Lev_Discrete - Siemens Moore 353 User Manual

Function Blocks

3.2.39 DOD_ - Digital Output lev_Discrete

DOD_ function blocks transmit up to 16 on/off signals
received from a controller block interconnection to remote
nodes on the LonWorks network. A maximum of 6 DOD
blocks can be used, up to the limit of nodes allowed on
the Lon network or the memory limit of the controller.
Each use of the block will be assigned a unique station
wide ID (e.g. DOD01). Each input transmitted is of type
SNVT_lev_disc and can be bound to network variables in
a single or multiple remote nodes that can receive network
variables of this type. These blocks will be available when
the LonWorks option board is installed in a 352P, 353, or
354N controller. The 0 NV NUM parameter enables the
number that the station has assigned to input 0 to be
viewed. All subsequent network variables are assigned
consecutively.
Each function block input has a mode associated with it.
The mode can be either NORMAL or FORCED. When
using a PC capable of sending LIL or Modbus commands,
the mode can be changed and the forced state can be
assigned a high (1) or low (0) value. The values
accessible over the network are the two inputs (F and N)
and the position of the SPDT switch illustrated in the
block diagram. A mode of '0' is Normal and '1' is
Forced.
Station
LonWorks
option board
Remote
node u
I/O Bus
F
F
0
nv *0 SNVT_
0
N
nv *0 binding
Q0
node r1, nv z1
F
F
1
nv *1
SNVT_
1
N
nv *1 binding
Q1
......
node r1, nv z2
F
F
E
nv *E SNVT_
E
N
nv *E binding
QE
node r6, nv z1
F
F
F
nv *F SNVT_
F
N
nv *F binding
QF
node r6, nv z2
QS
BLOCK DIAGRAM
3-46
Quality Status
LonWorks remote
I/O devices
node r1
......
nv z1 SNVT_
nv z2
SNVT_
Each function block input also has a quality status associated
node r2 with it. This status will go high (1) when the block determines
......
it has lost communication with the Lon node bound to that
nv z1 SNVT_
input. If any of the individual quality inputs are high, the
Quality Status block output will also be high.
......
nv z2
SNVT_
node r6
......
nv z1 SNVT_
nv z2
SNVT_
X03139S0
DIGITAL OUTPUT LEV_DISCRETE
DOD_
DIGITAL OUTPUT
LEV_DISCRETE
(16 channel)
Input 0 0
(Channel 0)
Quality 0
Q0
F
Input F
(Channel F)
Quality F
QF
QS
N V N U M
0 0 N V NUM
etwork ariable
...........
I N P U T 0
INPUT 0 ............
(S)
I N P U T F
INPUT F ............
(S)
UM353-1
LonWorks
Network
nvoDODnn_0
nv*0
SNVT _lev_disc
nvoDODnn_1
nv*1
SNVT _ lev_disc
nvoDODnn_2
nv*2
SNVT _ lev_disc
nvoDODnn_3
nv*3
SNVT _lev_disc
nvoDODnn_4
nv*4
SNVT _ lev_disc
nvoDODnn_5
nv*5 SNVT _ lev_disc
nvoDODnn_6
nv*6
SNVT _ lev_disc
nvoDODnn_7
nv*7
SNVT _ lev_disc
nvoDODnn_8
nv*8
SNVT _ lev_disc
nvoDODnn_9
nv*9
SNVT _ lev_disc
nvoDODnn_A
nv*A
SNVT _ lev_disc
nvoDODnn_B
nv*B SNVT _ lev_disc
nvoDODnn_C
nv*C
SNVT _ lev_disc
nvoDODnnD
nv*D SNVT _ lev_disc
nvoDODnn_E
nv*E
SNVT _ lev_disc
nvoDODnn_F
nv*F
SNVT _ lev_disc
(*)
ber (nv*) (R) .... 1 to 2000
loop tag.block tag.output (null)
loop tag.block tag.output (null)
March 2003